package ren.helloworld.utils;

import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import android.support.annotation.ColorInt;
import android.support.annotation.DrawableRes;
import android.support.annotation.LayoutRes;
import android.support.annotation.NonNull;
import android.support.annotation.StringRes;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.ForegroundColorSpan;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Toast;

import java.lang.ref.WeakReference;

/**
 * <pre>
 *     author: Blankj
 *     blog  : http://blankj.com
 *     time  : 2016/09/29
 *     desc  : 吐司相关工具类
 * </pre>
 */
public final class ToastUtils {

	private static final int DEFAULT_COLOR = 0x12000000;
	private static Toast sToast;
	private static int gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
	private static int xOffset = 0;
	private static int yOffset = (int) (64 * Utils.getContext().getResources().getDisplayMetrics().density + 0.5);
	private static int backgroundColor = DEFAULT_COLOR;
	private static int bgResource = -1;
	private static int messageColor = DEFAULT_COLOR;
	private static WeakReference<View> sViewWeakReference;
	private static Handler sHandler = new Handler(Looper.getMainLooper());

    private ToastUtils() {
        throw new UnsupportedOperationException("u can't instantiate me...");
    }

    /**
     * 设置吐司位置
     *
     * @param gravity 位置
     * @param xOffset x偏移
     * @param yOffset y偏移
     */
    public static void setGravity(final int gravity, final int xOffset, final int yOffset) {
        ToastUtils.gravity = gravity;
        ToastUtils.xOffset = xOffset;
        ToastUtils.yOffset = yOffset;
    }

    /**
     * 设置吐司view
     *
     * @param layoutId 视图
     */
    public static void setView(@LayoutRes final int layoutId) {
        LayoutInflater inflate = (LayoutInflater) Utils.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	    sViewWeakReference = new WeakReference<>(inflate.inflate(layoutId, null));
    }

    /**
     * 设置吐司view
     *
     * @param view 视图
     */
    public static void setView(final View view) {
	    sViewWeakReference = view == null ? null : new WeakReference<>(view);
    }

    /**
     * 获取吐司view
     *
     * @return view
     */
    public static View getView() {
	    if (sViewWeakReference != null) {
		    final View view = sViewWeakReference.get();
		    if (view != null) {
			    return view;
		    }
	    }
        if (sToast != null) return sToast.getView();
        return null;
    }

    /**
     * 设置背景颜色
     *
     * @param backgroundColor 背景色
     */
    public static void setBgColor(@ColorInt final int backgroundColor) {
	    ToastUtils.backgroundColor = backgroundColor;
    }

	/**
	 * 设置背景资源
	 *
	 * @param bgResource 背景资源
	 */
	public static void setBgResource(@DrawableRes final int bgResource) {
		ToastUtils.bgResource = bgResource;
	}

	/**
	 * 设置消息颜色
	 *
	 * @param messageColor 颜色
	 */
	public static void setMessageColor(@ColorInt final int messageColor) {
		ToastUtils.messageColor = messageColor;
	}

	/**
     * 安全地显示短时吐司
     *
     * @param text 文本
     */
    public static void showShortSafe(@NonNull final CharSequence text) {
	    sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(text, Toast.LENGTH_SHORT);
            }
        });
    }

    /**
     * 安全地显示短时吐司
     *
     * @param resId 资源Id
     */
    public static void showShortSafe(@StringRes final int resId) {
	    sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(resId, Toast.LENGTH_SHORT);
            }
        });
    }

    /**
     * 安全地显示短时吐司
     *
     * @param resId 资源Id
     * @param args  参数
     */
    public static void showShortSafe(@StringRes final int resId, final Object... args) {
	    sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(resId, Toast.LENGTH_SHORT, args);
            }
        });
    }

    /**
     * 安全地显示短时吐司
     *
     * @param format 格式
     * @param args   参数
     */
    public static void showShortSafe(final String format, final Object... args) {
        sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(format, Toast.LENGTH_SHORT, args);
            }
        });
    }

    /**
     * 安全地显示长时吐司
     *
     * @param text 文本
     */
    public static void showLongSafe(@NonNull final CharSequence text) {
	    sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(text, Toast.LENGTH_LONG);
            }
        });
    }

    /**
     * 安全地显示长时吐司
     *
     * @param resId 资源Id
     */
    public static void showLongSafe(@StringRes final int resId) {
	    sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(resId, Toast.LENGTH_LONG);
            }
        });
    }

    /**
     * 安全地显示长时吐司
     *
     * @param resId 资源Id
     * @param args  参数
     */
    public static void showLongSafe(@StringRes final int resId, final Object... args) {
	    sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(resId, Toast.LENGTH_LONG, args);
            }
        });
    }

    /**
     * 安全地显示长时吐司
     *
     * @param format 格式
     * @param args   参数
     */
    public static void showLongSafe(final String format, final Object... args) {
        sHandler.post(new Runnable() {
            @Override
            public void run() {
                show(format, Toast.LENGTH_LONG, args);
            }
        });
    }

    /**
     * 显示短时吐司
     *
     * @param text 文本
     */
    public static void showShort(@NonNull final CharSequence text) {
	    show(text, Toast.LENGTH_SHORT);
    }

    /**
     * 显示短时吐司
     *
     * @param resId 资源Id
     */
    public static void showShort(@StringRes final int resId) {
	    show(resId, Toast.LENGTH_SHORT);
    }

    /**
     * 显示短时吐司
     *
     * @param resId 资源Id
     * @param args  参数
     */
    public static void showShort(@StringRes final int resId, final Object... args) {
	    show(resId, Toast.LENGTH_SHORT, args);
    }

    /**
     * 显示短时吐司
     *
     * @param format 格式
     * @param args   参数
     */
    public static void showShort(final String format, final Object... args) {
	    show(format, Toast.LENGTH_SHORT, args);
    }

    /**
     * 显示长时吐司
     *
     * @param text 文本
     */
    public static void showLong(@NonNull final CharSequence text) {
	    show(text, Toast.LENGTH_LONG);
    }

    /**
     * 显示长时吐司
     *
     * @param resId 资源Id
     */
    public static void showLong(@StringRes final int resId) {
	    show(resId, Toast.LENGTH_LONG);
    }

    /**
     * 显示长时吐司
     *
     * @param resId 资源Id
     * @param args  参数
     */
    public static void showLong(@StringRes final int resId, final Object... args) {
	    show(resId, Toast.LENGTH_LONG, args);
    }

    /**
     * 显示长时吐司
     *
     * @param format 格式
     * @param args   参数
     */
    public static void showLong(final String format, final Object... args) {
	    show(format, Toast.LENGTH_LONG, args);
    }

    /**
     * 安全地显示短时自定义吐司
     */
    public static void showCustomShortSafe(@LayoutRes final int layoutId) {
	    sHandler.post(new Runnable() {
		    @Override
		    public void run() {
			    setView(layoutId);
			    show("", Toast.LENGTH_SHORT);
		    }
	    });
    }

	/**
	 * 安全地显示长时自定义吐司
	 */
	public static void showCustomLongSafe(@LayoutRes final int layoutId) {
		sHandler.post(new Runnable() {
			@Override
			public void run() {
				setView(layoutId);
				show("", Toast.LENGTH_LONG);
			}
		});
	}

	/**
	 * 显示短时自定义吐司
	 */
	public static void showCustomShort(@LayoutRes final int layoutId) {
		setView(layoutId);
		show("", Toast.LENGTH_SHORT);
	}

	/**
	 * 显示长时自定义吐司
	 */
	public static void showCustomLong(@LayoutRes final int layoutId) {
		setView(layoutId);
		show("", Toast.LENGTH_LONG);
	}

	/**
	 * 安全地显示短时自定义吐司
	 */
	public static void showCustomShortSafe(@NonNull final View view) {
		sHandler.post(new Runnable() {
			@Override
			public void run() {
				setView(view);
				show("", Toast.LENGTH_SHORT);
			}
		});
	}

	/**
	 * 安全地显示长时自定义吐司
	 */
	public static void showCustomLongSafe(@NonNull final View view) {
		sHandler.post(new Runnable() {
			@Override
			public void run() {
				setView(view);
				show("", Toast.LENGTH_LONG);
			}
		});
	}

	/**
	 * 显示短时自定义吐司
	 */
	public static void showCustomShort(@NonNull final View view) {
		setView(view);
		show("", Toast.LENGTH_SHORT);
	}

	/**
	 * 显示长时自定义吐司
	 */
	public static void showCustomLong(@NonNull final View view) {
		setView(view);
		show("", Toast.LENGTH_LONG);
	}

	/**
	 * 显示吐司
	 *
     * @param resId    资源Id
     * @param duration 显示时长
     */
    private static void show(@StringRes final int resId, final int duration) {
	    show(Utils.getContext().getResources().getText(resId).toString(), duration);
    }

    /**
     * 显示吐司
     *
     * @param resId    资源Id
     * @param duration 显示时长
     * @param args     参数
     */
    private static void show(@StringRes final int resId, final int duration, final Object... args) {
	    show(String.format(Utils.getContext().getResources().getString(resId), args), duration);
    }

    /**
     * 显示吐司
     *
     * @param format   格式
     * @param duration 显示时长
     * @param args     参数
     */
    private static void show(final String format, final int duration, final Object... args) {
	    show(String.format(format, args), duration);
    }

    /**
     * 显示吐司
     *
     * @param text     文本
     * @param duration 显示时长
     */
    private static void show(final CharSequence text, final int duration) {
	    cancel();
	    boolean isCustom = false;
	    if (sViewWeakReference != null) {
	        final View view = sViewWeakReference.get();
	        if (view != null) {
		        sToast = new Toast(Utils.getContext());
		        sToast.setView(view);
		        sToast.setDuration(duration);
		        isCustom = true;
	        }
        }
	    if (!isCustom) {
		    if (messageColor != DEFAULT_COLOR) {
			    SpannableString spannableString = new SpannableString(text);
			    ForegroundColorSpan colorSpan = new ForegroundColorSpan(messageColor);
			    spannableString.setSpan(colorSpan, 0, spannableString.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
			    sToast = Toast.makeText(Utils.getContext(), spannableString, duration);
		    } else {
			    sToast = Toast.makeText(Utils.getContext(), text, duration);
		    }
	    }
	    View view = sToast.getView();
	    if (bgResource != -1) {
		    view.setBackgroundResource(bgResource);
	    } else if (backgroundColor != DEFAULT_COLOR) {
		    view.setBackgroundColor(backgroundColor);
	    }
	    sToast.setGravity(gravity, xOffset, yOffset);
        sToast.show();
    }

    /**
     * 取消吐司显示
     */
    public static void cancel() {
        if (sToast != null) {
            sToast.cancel();
            sToast = null;
        }
    }
}
